摘要
以河南省平顶山市为例,行政村为评价单元,从土壤、地貌、气候、社会条件4个方面构建了耕地整治适宜性评价指标体系,采用综合指数法和Arc GIS的空间分析功能开展耕地整治适宜性评价并划分适宜性等级,并对其影响因子进行分析,以期为研究区耕地整治和合理利用提供理论依据。结果表明,高度适宜耕地占耕地总面积的5.14%,分布在鲁山县的中心城区、中部及西部乡镇,石龙区南部;中度适宜耕地占34.24%,主要分布在鲁山县东部及背孜乡(除中南部),宝丰县除观音堂乡南部与东部、前营乡外的其余乡镇,叶县西部,新华区,湛河区、石龙区北部,汝州市寄料镇西部、小屯镇东部等;临界适宜耕地比例为44.15%,主要分布在叶县(除西部),卫东区,郏县,汝州市南部、临汝镇西部、温泉镇除东北部、杨楼乡西部等乡镇;低度适宜耕地占16.47%,主要分布在舞钢市,汝州市的王寨乡北部、杨楼乡东部、温泉镇东北部、临汝镇(除西部)与汝州市的北部等乡镇。年均降水量和生长季降水量为各适宜等级的影响因子,此外,人均GDP为高度适宜等级的影响因子,有效土层厚度为高度适宜、临界适宜和低度适宜等级的影响因子。
Taking Pingdingshan city as an example,administrative village as evaluation units,the evalua- tion index system was established including edaphic,topographical,climatic and social condition. The sui- table evaluation of cultivated land renovation was studied based on comprehensive index method and the spatial analyst of ArcGIS, and then the suitable grades were divided, and the impact factors were ob- tained. The results showed that the high suitability grade cultivated land accounted for 5.14% , which dis- tributed in city center,middle and western town in Lushan county,the south of Shilong district. The medium suitability grade cultivated land accounted for 34.24% , which distributed in the eastern part of Lushan county, Beizi town except middle southern part, Baofeng county except the south and east in Guanyintang town and Qianying town, the western part of Ye county, Xinhua district, Zhanhe district, the north of Shi- long district,the west of Jiliao town and the east of Xiaotun town in Ruzho city. The critical suitability grade cultivated land accounted for 44.15 % ,which distributed in Ye county except western part, Weidougdistrict,Jia county, south of Ruzhou city, west of Linru town, Wenquan town except northeast part and western part of Yanglou town in Ruzhou city. The low suitability grade cultivated land accounted for 16.47% ,which distributed in the north of Wangzhai town, the eastern part of Yanglou town, nortneast of Wenquan town and Linru town except western part in Ruzhou city and the northern part of Ruzhou city. The average annual rainfall and the rainfall of growth season were the impact factors of all grades, in addi- tion,per capita GDP was the impact factor for high suitability grade,and the effective thickness of soil la- yer was the impact factor for high, critical and low suitability grade.
出处
《河南农业科学》
CSCD
北大核心
2015年第7期78-82,共5页
Journal of Henan Agricultural Sciences
基金
国土资源部土地资源调查评价类项目(1211410781016)
河南省政府决策研究招标课题(2014225)
中国博士后科学基金项目(2013M540571)
河南省教育厅科学技术研究重点项目(13A630346)
关键词
整治
适宜性
ARC
GIS
综合指数法
熵值法
renovation
suitability
ArcGIS
comprehensive index method
entropy method
